//两种调试信息输出：alert函数和console控制台（客户端浏览器）输出

//定义数值类型变量

var age = 23;
alert(age);

//字符类型变量
var question = "中国人\'中国地";
alert(question);

//布尔类型变量
var is_admin = true;
console.log(is_admin);

//数组类型变量
var animals = Array();
animals[0] = "汪";
animals[1] = "喵";
animals[2] = "咕";
console.log(animals);

//关联数组
var product = Array();
product["name"] = "笔记本电脑";
product["price"] = "5000.0";
console.log(product["price"]);

//对象
var student = new Object();
student.name = "张三";
student.age = 19;
console.log(student);

//选择
var number = 5;
if(number >= 5 && number <=10){
    console.log("输入数据符合要求！");
}

//while循环
var count = 1;
while(count < 6)
{
    console.log(count);
    count++;
}

//for循环
for (var i = 0; i < 6; i++)
    console.log(i);

//函数
function square(num) {
    return num*num;
}
console.log(square(20));

//匿名函数
var x = function (a,b) {
    return a+b;
}
console.log(x(2,3));

//匿名函数自执行
console.log("匿名函数自执行形式1：" + (function (a,b) {return a+b}) (3,4));
console.log("匿名函数自执行形式2：" + (function (a,b) {return a-b} (10,12)));

//对象方法
var person = {
    name:"李四",
    age:20
};

//增加方法
person.show = function () {
    console.log("姓名：" + name + "年龄：" + age);
}
person.show();

//访问对象采用for..in结构
for (var attr in person){
    console.log(typeof person[attr]);
}

//常见对象使用
var person2 = {
    nameL:"王五",
    age:21,
    success:function () {
        console.log("成功");   }
}
